यदि a: b = 3 : 4 तथा b : c = 4 : 7 हो तो a + b + c / c = ? - - Yadi a: B = 3 : 4 Tatha B : C = 4 : 7 Ho To A + B + C / C = ? Maths in hindi, ratio & proportion 2 question answers in hindi pdf 3 questions in hindi, Know About 1 Maths online test Maths notes in hindi quiz book 7